Finding the Fourth Proportional to 518,402.41, 715,398.56 and 288,974.26
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Solution
The fourth proportional to 518,402.41, 715,398.56 and 288,974.26 is: 398,786.28
Step by Step Solution
- Step 1: Write the proportion equation
518,402.41 : 715,398.56 = 288,974.26 : x - Step 2: Convert to fraction form
518,402.41/715,398.56 = 288,974.26/x - Step 3: Cross multiply
518,402.41x = 715,398.56 × 288,974.26 - Step 4: Simplify right side
518,402.41x = 206,731,769,481.07 - Step 5: Solve for x
x = 206,731,769,481.07/518,402.41 - Step 6: Final answer
x = 398,786.28
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.